/*!
 * OpenUI5
 * (c) Copyright 2009-2019 SAP SE or an SAP affiliate company.
 * Licensed under the Apache License, Version 2.0 - see LICENSE.txt.
 */

sap.ui.define([
	'sap/ui/core/Control',
	'./InputBase',
	'sap/ui/Device',
	'sap/ui/core/library',
	"sap/ui/events/KeyCodes",
	"sap/base/Log",
	"sap/ui/thirdparty/jquery",
	"sap/m/MaskInputRule",
	// jQuery Plugin "cursorPos"
	"sap/ui/dom/jquery/cursorPos"
], function(Control, InputBase, Device, coreLibrary, KeyCodes, Log, jQuery, MaskInputRule) {
	"use strict";

	// shortcut for sap.ui.core.TextDirection
	var TextDirection = coreLibrary.TextDirection;

	/**
	 * Applies mask support for input controls.
	 * It should should be applied to the prototype of a <code>sap.m.InputBase</code>.
	 *
	 * @version 1.71.0
	 * @private
	 * @mixin
	 * @alias sap.m.MaskEnabler
	 */
	var MaskEnabler = function () {

		var ESCAPE_CHARACTER = '^';

		/**
		 * Initializes the control.
		 */
		this.init = MaskEnabler.init = function () {
			// After decoupling of ValueState from the InputBase, the InputBase creates the ValueStateMessage on init (see change #1755336)
			InputBase.prototype.init.call(this);
			// Stores the caret timeout id for further manipulation (e.g Canceling the timeout)
			this._iCaretTimeoutId = null;
			// Stores the first placeholder replaceable position where the user can enter a value (immutable characters are ignored)
			this._iUserInputStartPosition = null;
			// Stores the length of the mask
			this._iMaskLength = null;
			// The last input(dom) value of the MaskInput (includes input characters , placeholders and immutable characters)
			this._sOldInputValue = null;
			// Rules with regular expression tests corresponding to each character
			this._oRules = null;
			// char array for keeping the input value with the applied mask
			this._oTempValue = null;
			// Skips setup of mask variables on every iteration when initializing default rules
			this._bSkipSetupMaskVariables = null;

			this._setDefaultRules();
			this._setupMaskVariables();
		};

		/**
		 * Called when the control is destroyed.
		 */
		this.exit = MaskEnabler.exit = function () {
			this._iCaretTimeoutId = null;
			this._iUserInputStartPosition = null;
			this._iMaskLength = null;
			this._sOldInputValue = null;
			this._oRules = null;
			this._oTempValue = null;
			this._bSkipSetupMaskVariables = null;
		};

		/**
		 * Handles the internal event <code>onBeforeRendering</code>.
		 */
		this.onBeforeRendering = function () {
			if (this._isMaskEnabled()) {
				/*Check if all properties and rules are valid (although current setters validates the input,
				because not everything is verified - i.e. modifying an existing rule is not verified in the context of all rules*/
				var sValidationErrorMsg = this._validateDependencies();

				if (sValidationErrorMsg) {
					Log.warning("Invalid mask input: " + sValidationErrorMsg);
				}
			}

			InputBase.prototype.onBeforeRendering.apply(this, arguments);
		};

		/**
		 * Handles the internal event <code>onAfterRendering</code>.
		 */
		this.onAfterRendering = function () {
			InputBase.prototype.onAfterRendering.apply(this, arguments);
		};

		/**
		 * Handles <code>focusin</code> event.
		 * @param {object} oEvent The jQuery event
		 */
		this.onfocusin = MaskEnabler.onfocusin = function (oEvent) {
			this._sOldInputValue = this._getInputValue();
			InputBase.prototype.onfocusin.apply(this, arguments);

			if (this._isMaskEnabled()) {
				// if input does not differ from original (i.e. empty mask) OR differs from original but has invalid characters
				if (!this._oTempValue.differsFromOriginal() || !this._isValidInput(this._sOldInputValue)) {
					this._applyMask();
				}

				this._positionCaret(true);
			}
		};

		/**
		 * Handles <code>focusout</code> event.
		 * @param {object} oEvent The jQuery event
		 */
		this.onfocusout = function (oEvent) {
			if (this._isMaskEnabled()) {
				//The focusout should not be passed down to the InputBase as it will always generate onChange event.
				//For the sake of MaskInput, change event is decided inside _inputCompletedHandler, the reset of the InputBase.onfocusout
				//follows
				this.bFocusoutDueRendering = this.bRenderingPhase;
				this.$().toggleClass("sapMFocus", false);
				// remove touch handler from document for mobile devices
				jQuery(document).off('.sapMIBtouchstart');

				// Since the DOM is replaced during the rendering, an <code>onfocusout</code> event is fired and possibly the
				// focus is set on the document, hence you can ignore this event during the rendering.
				if (this.bRenderingPhase) {
					return;
				}

				//close value state message popup when focus is outside the input
				this.closeValueStateMessage();
				this._inputCompletedHandler();
			} else {
				this._inputCompletedHandlerNoMask();
				InputBase.prototype.onfocusout.apply(this, arguments);
			}
		};

		/**
		 * Handles <code>onInput</code> event.
		 * @param {object} oEvent The jQuery event
		 */
		this.oninput = function (oEvent) {
			if (this._isChromeOnAndroid()) {
				this._onInputForAndroidHandler(oEvent);
				return;
			}

			InputBase.prototype.oninput.apply(this, arguments);

			if (this._isMaskEnabled()) {
				this._applyMask();
				this._positionCaret(false);
			}
		};

		/**
		 * Handles <code>keyPress</code> event.
		 * @param {object} oEvent The jQuery event
		 */
		this.onkeypress = function (oEvent) {
			if (this._isMaskEnabled()) {
				this._keyPressHandler(oEvent);
			}
		};

		/**
		 * Handles <code>keyDown</code> event.
		 * @param {object} oEvent The jQuery event
		 */
		this.onkeydown = MaskEnabler.onkeydown = function (oEvent) {
			if (this._isMaskEnabled()) {
				var oKey = this._parseKeyBoardEvent(oEvent);

				InputBase.prototype.onkeydown.apply(this, arguments);

				this._keyDownHandler(oEvent, oKey);
			} else {
				var oKey = this._parseKeyBoardEvent(oEvent);
				if (oKey.bEnter) {
					this._inputCompletedHandlerNoMask();
				}
				InputBase.prototype.onkeydown.apply(this, arguments);
			}
		};

		/**
		 * Handles [Enter] key.
		 * <b>Note:</b> If subclasses override this method, keep in mind that [Enter] is not really handled here, but in {@link sap.m.MaskInput.prototype#onkeydown}.
		 * @param {jQuery.Event} oEvent The event object
		 */
		this.onsapenter = function(oEvent) {
			//Nothing to do, [Enter] is already handled in onkeydown part.
		};

		/**
		 * Handles the <code>sapfocusleave</code> event of the MaskInput.
		 <b>Note:</b> If subclasses override this method, keep in mind that the <code>sapfocusleave</code> event is handled by {@link sap.m.MaskInput.prototype#onfocusout}.
		 * @param {jQuery.Event} oEvent The event object
		 * @private
		 */
		this.onsapfocusleave = function(oEvent) {
		};

		/**
		 * Setter for property <code>value</code>.
		 *
		 * @param {string} sValue New value for property <code>value</code>.
		 * @return {sap.m.MaskInput} <code>this</code> to allow method chaining.
		 * @public
		 */
		this.setValue = MaskEnabler.setValue = function (sValue) {
			sValue = this.validateProperty('value', sValue);
			InputBase.prototype.setValue.call(this, sValue);
			this._sOldInputValue = sValue;

			if (this._isMaskEnabled()) {
				// We need this check in case when MaskInput is initialized with specific value
				if (!this._oTempValue) {
					this._setupMaskVariables();
				}
				// We don't need to validate the initial MaskInput placeholder value because this will break setting it to empty value on focusout
				if (this._oTempValue._aInitial.join('') !== sValue) {// sValue is never null/undefined here
					this._applyRules(sValue);
				}
			}

			return this;
		};

		this.addAggregation = function (sAggregationName, oObject, bSuppressInvalidate) {
			if (sAggregationName === "rules") {
				if (!this._validateRegexAgainstPlaceHolderSymbol(oObject)) {
					return this;
				}
				// ensure there is no more than a single rule with the same mask format symbol
				this._removeRuleWithSymbol(oObject.getMaskFormatSymbol());
				Control.prototype.addAggregation.apply(this, arguments);
				if (!this._bSkipSetupMaskVariables) {
					this._setupMaskVariables();
				}
				return this;
			}
			return Control.prototype.addAggregation.apply(this, arguments);
		};

		this.insertAggregation = function (sAggregationName, oObject, iIndex, bSuppressInvalidate) {
			if (sAggregationName === "rules") {
				if (!this._validateRegexAgainstPlaceHolderSymbol(oObject)) {
					return this;
				}

				// ensure there is no more than a single rule with the same mask format symbol
				this._removeRuleWithSymbol(oObject.getMaskFormatSymbol());
				Control.prototype.insertAggregation.apply(this, arguments);
				this._setupMaskVariables();

				return this;
			}
			return Control.prototype.insertAggregation.apply(this, arguments);
		};

		/**
		 * Validates that the rule does not include the currently set placeholder symbol as allowed mask character.
		 * @param {object} oRule List of regular expressions per mask symbol
		 * @returns {boolean} True if the rule is valid, false otherwise
		 * @private
		 */
		this._validateRegexAgainstPlaceHolderSymbol = function (oRule) {
			if (new RegExp(oRule.getRegex()).test(this.getPlaceholderSymbol())) {
				Log.error("Rejecting input mask rule because it includes the currently set placeholder symbol.");
				return false;
			}
			return true;
		};

		/**
		 * Overrides the method in order to validate the placeholder symbol.
		 * @param {String} sSymbol The placeholder symbol
		 * @override
		 * @returns {sap.ui.base.MaskInput} <code>this</code> pointer for chaining
		 */
		this.setPlaceholderSymbol = function(sSymbol) {
			var bSymbolFound;

			// make sure the placeholder symbol is always a single regex supported character
			if (!/^.$/i.test(sSymbol)) {
				Log.error("Invalid placeholder symbol string given");
				return this;
			}

			// make sure the placeholder symbol given is not part of any of the existing rules
			// as regex
			bSymbolFound = this.getRules().some(function(oRule){
				return new RegExp(oRule.getRegex()).test(sSymbol);
			});

			if (bSymbolFound) {
				Log.error("Rejecting placeholder symbol because it is included as a regex in an existing mask input rule.");
			} else {
				this.setProperty("placeholderSymbol", sSymbol);
				this._setupMaskVariables();
			}
			return this;
		};

		/**
		 * Sets the mask for this instance.
		 * The mask is mandatory.
		 * @param {String} sMask The mask
		 * @returns {sap.m.MaskInput} <code>this</code> pointer for chaining
		 * @throws {Error} Throws an error if the input is invalid
		 */
		this.setMask = function (sMask) {
			if (!sMask) {
				var sErrorMsg = "Setting an empty mask is pointless. Make sure you set it with a non-empty value.";
				Log.warning(sErrorMsg);
				return this;
			}
			this.setProperty("mask", sMask, true);
			this._setupMaskVariables();
			return this;
		};

		/**
		 * Verifies whether a character at a given position is allowed according to its mask rule.
		 * @param {String} sChar The character
		 * @param {int} iIndex The position of the character
		 * @returns {boolean} Whether a character at a given position is allowed
		 * @protected
		 */
		this._isCharAllowed = function (sChar, iIndex) {
			return this._oRules.applyCharAt(sChar, iIndex);
		};

		/**
		 * Gets a replacement string for the character being placed in the input.
		 * Subclasses may override this method in order to get some additional behavior. For instance, switching current input
		 * character with other for time input purposes. As an example, if the user enters "2" (in 12-hour format), the consumer may use
		 * this method to replace the input from "2" to "02".
		 * @param {String} sChar The current character from the input
		 * @param {int} iPlacePosition The position the character should occupy
		 * @param {string} sCurrentInputValue The value currently inside the input field (may differ from the property value)
		 * @returns {String} A string that replaces the character
		 * @protected
		 */
		this._feedReplaceChar = function (sChar, iPlacePosition, sCurrentInputValue) {
			return sChar;
		};

		/**
		 * This method is used when maskMode is Off. It main purpose is to set the value of the input, call its setValue method
		 * and fire change event if it is needed. This is not used for MaskMode On because this logic is handled by _inputCompletedHandler
		 * @private
		 */
		this._inputCompletedHandlerNoMask = function () {
			var sValue = this._getInputValue();

			if (this._sOldInputValue !== sValue) {
				// Altered value (if any) should be used only for updating <value>. Mask works on dom level.
				InputBase.prototype.setValue.call(this, this._getAlteredUserInputValue ? this._getAlteredUserInputValue(sValue) : sValue);
				this._sOldInputValue = sValue;
				if (this.onChange && !this.onChange({value: sValue})) {//if the subclass didn't fire the "change" event by itself
					this.fireChangeEvent(sValue);
				}
			}
		};

		/**
		 * @name _getAlteredUserInputValue
		 * Subclasses can override it in order to alter the value entered by the user right before it is transmitted
		 * to the InputBase#value
		 */

		/********************************************************************************************
		 ****************************** Private methods and classes *********************************
		 ********************************************************************************************/

		/**
		 * Encapsulates the work with a char array.
		 * @param {Array} aContent The char array
		 * @constructor
		 * @private
		 */
		var CharArray = function (aContent) {
			// Initial content
			this._aInitial = aContent.slice(0);
			//The real content
			this._aContent = aContent;
		};

		CharArray.prototype.setCharAt = function (sChar, iPosition) {
			this._aContent[iPosition] = sChar;
		};

		CharArray.prototype.charAt = function (iPosition) {
			return this._aContent[iPosition];
		};

		/**
		 * Converts the char array to a string representation.
		 * @returns {String} The char array converted to a string
		 * @private
		 */
		CharArray.prototype.toString = function () {
			return this._aContent.join('');
		};

		/**
		 * Checks whether the char array content differs from its original content.
		 * @returns {boolean} True if different content, false otherwise
		 * @private
		 */
		CharArray.prototype.differsFromOriginal = function () {
			return this.differsFrom(this._aInitial);
		};

		/**
		 * Checks whether the char array content differs from given string.
		 * @param {string | array} vValue The value to compare the char array with
		 * @returns {boolean} True if different content, false otherwise.
		 * @private
		 */
		CharArray.prototype.differsFrom = function (vValue) {
			var i = 0;
			if (vValue.length !== this._aContent.length) {
				return true;
			}
			for (; i < vValue.length; i++) {
				if (vValue[i] !== this._aContent[i]) {
					return true;
				}
			}
			return false;
		};

		/**
		 * Gets the size of the char array.
		 * @returns {int} Number of items in the char array
		 * @private
		 */
		CharArray.prototype.getSize = function () {
			return this._aContent.length;
		};

		/**
		 * Encapsulates the work with test rules.
		 * @param {array} aRules The test rules
		 * @constructor
		 * @private
		 */
		var TestRules = function (aRules) {
			this._aRules = aRules;
		};

		/**
		 * Finds the next testable position in the <code>MaskInput</code>.
		 * @param {int} iCurrentPos The position next to which seeking starts (if skipped, "-1" will be assumed)
		 * @returns {int} The found position.
		 * @private
		 */
		TestRules.prototype.nextTo = function (iCurrentPos) {
			if (typeof iCurrentPos === "undefined") {
				iCurrentPos = -1; // this will make sure the 0 rule is also included in the search
			}
			do {
				iCurrentPos++;
			} while (iCurrentPos < this._aRules.length && !this._aRules[iCurrentPos]);
			return iCurrentPos;
		};

		/**
		 * Finds the previous testable position in the <code>MaskInput</code>.
		 * @param {int} iCurrentPos The position before which seeking starts
		 * @returns {int} The found position
		 * @private
		 */
		TestRules.prototype.previousTo = function (iCurrentPos) {
			do {
				iCurrentPos--;
			} while (!this._aRules[iCurrentPos] && iCurrentPos > 0);
			return iCurrentPos;
		};

		/**
		 * Checks whether there is a rule at the specified index.
		 * @param {int} iIndex The index of the rule
		 * @returns {boolean} True, if there is a rule at the specified index, false otherwise
		 * @private
		 */
		TestRules.prototype.hasRuleAt = function (iIndex) {
			return !!this._aRules[iIndex];
		};

		/**
		 * Applies a rule to a character.
		 * @param {String} sChar The character to which the rule will be applied
		 * @param {int} iIndex The index of the rule
		 * @returns {boolean} True if the character passes the validation rule, false otherwise.
		 * @private
		 */
		TestRules.prototype.applyCharAt = function (sChar, iIndex) {
			return this._aRules[iIndex].test(sChar);
		};

		/**
		 * Sets up default mask rules.
		 * @private
		 */
		this._setDefaultRules = function () {
			this._bSkipSetupMaskVariables = true;
			this.addRule(new MaskInputRule({
				maskFormatSymbol: "a",
				regex: "[A-Za-z]"
			}), true);
			this.addRule(new MaskInputRule({
				maskFormatSymbol: "9",
				regex: "[0-9]"
			}), true);
			this._bSkipSetupMaskVariables = false;
		};

		/**
		 * Checks if the dependent properties and aggregations are valid.
		 * @returns {string | null} The errors if any, or false value if no errors
		 * @private
		 */
		this._validateDependencies = function () {
			var sPlaceholderSymbol = this.getPlaceholderSymbol(),
				aRules = this.getRules(),
				aMaskFormatSymbols = [],
				aErrMessages = [];

			if (!this.getMask()) {
				aErrMessages.push("Empty mask");
			}
			// Check if rules are valid (not duplicated and different from the placeholderSymbol)
			if (aRules.length) {
				aMaskFormatSymbols = [];
				aRules.every(function (oRule) {
					var sMaskFormatSymbol = oRule.getMaskFormatSymbol(),
						bCurrentDiffersFromPlaceholder = sMaskFormatSymbol !== sPlaceholderSymbol,
						bCurrentDiffersFromOthers;

					bCurrentDiffersFromOthers = !aMaskFormatSymbols.some(function (sSymbol) {
						return sMaskFormatSymbol === sSymbol;
					});
					aMaskFormatSymbols.push(sMaskFormatSymbol);

					if (!bCurrentDiffersFromPlaceholder) {
						aErrMessages.push("Placeholder symbol is the  same as the existing rule's mask format symbol");
					}
					if (!bCurrentDiffersFromOthers) {
						aErrMessages.push("Duplicated rule's maskFormatSymbol [" + sMaskFormatSymbol + "]");
					}

					return bCurrentDiffersFromPlaceholder && bCurrentDiffersFromOthers;
				});
			}

			return aErrMessages.length ? aErrMessages.join(". ") : null;
		};

		/**
		 * Removes any existing rules with a specific mask symbol.
		 * @param {string} sSymbol The symbol of <code>MaskInputRule</code> which will be removed
		 * @private
		 */
		this._removeRuleWithSymbol = function (sSymbol) {
			var oSearchRuleResult = this._findRuleBySymbol(sSymbol, this.getRules());
			if (oSearchRuleResult) {
				this.removeAggregation('rules', oSearchRuleResult.oRule);
				oSearchRuleResult.oRule.destroy();
			}
		};

		/**
		 * Searches for a particular <code>MaskInputRule</code> by a given symbol.
		 * @param {string} sMaskRuleSymbol The rule symbol to search for
		 * @param {array} aRules A collection of rules to search within
		 * @returns {null|object} Two key results (for example, { oRule: {MaskInputRule} The found rule, iIndex: {int} the index of it })
		 * @private
		 */
		this._findRuleBySymbol = function (sMaskRuleSymbol, aRules) {
			var oResult = null;

			if (typeof sMaskRuleSymbol !== "string" || sMaskRuleSymbol.length !== 1) {
				Log.error(sMaskRuleSymbol + " is not a valid mask rule symbol");
				return null;
			}

			jQuery.each(aRules, function (iIndex, oRule) {
				if (oRule.getMaskFormatSymbol() === sMaskRuleSymbol) {
					oResult = {
						oRule: oRule,
						iIndex: iIndex
					};
					return false;
				}
			});

			return oResult;
		};

		/**
		 * Gets the position range of the selected text.
		 * @returns {object} An object that contains the start and end positions of the selected text (zero based)
		 * @private
		 */
		this._getTextSelection = function () {
			var _$Input = jQuery(this.getFocusDomRef());

			if (!_$Input && (_$Input.length === 0 || _$Input.is(":hidden"))) {
				return {};
			}

			return {
				iFrom: _$Input[0].selectionStart,
				iTo: _$Input[0].selectionEnd,
				bHasSelection: (_$Input[0].selectionEnd - _$Input[0].selectionStart !== 0)
			};
		};

		/**
		 * Places the cursor on a given position (zero based).
		 * @param {int} iPos The position the cursor to be placed on. If negative value is given, 0 is considered.
		 * @returns {sap.ui.MaskEnabler} <code>this</code> to allow method chaining
		 * @private
		 */
		this._setCursorPosition = function (iPos) {
			if (iPos < 0) {
				iPos = 0;
			}
			jQuery(this.getFocusDomRef()).cursorPos(iPos);
			return this;
		};

		/**
		 * Gets the current position of the cursor.
		 * @returns {int} The current cursor position (zero based).
		 * @private
		 */
		this._getCursorPosition = function () {
			return jQuery(this.getFocusDomRef()).cursorPos();
		};

		/**
		 * Sets up the mask.
		 * @private
		 */
		this._setupMaskVariables = function () {
			var aRules = this.getRules(),
				sMask = this.getMask(),
				aSkipIndexes = this._getSkipIndexes(sMask), // Used to collect indexes which should be skipped when building validation rules
				aMask = this._getMaskArray(sMask, aSkipIndexes),
				sPlaceholderSymbol = this.getPlaceholderSymbol(),
				aInitial = this._buildMaskValueArray(aMask, sPlaceholderSymbol, aRules, aSkipIndexes),
				aTestRules = this._buildRules(aMask, aRules, aSkipIndexes);

			this._oTempValue = new CharArray(aInitial);
			this._iMaskLength = aTestRules.length;
			this._oRules = new TestRules(aTestRules);
			this._iUserInputStartPosition = this._oRules.nextTo();
		};

		/**
		 * Converts mask value string to array and skips the escape characters.
		 * @since 1.38
		 * @private
		 * @param {string} sMask Mask value
		 * @param {Array} aSkipIndexes List of character indexes to skip
		 * @returns {Array} The array with the values from the mask
		 */
		this._getMaskArray = function (sMask, aSkipIndexes) {
			var iLength = Array.isArray(aSkipIndexes) ? aSkipIndexes.length : 0,
				aMaskArray = (sMask) ? sMask.split("") : [],
				i;

			for (i = 0; i < iLength; i++) {
				aMaskArray.splice(aSkipIndexes[i], 1);
			}
			return aMaskArray;
		};

		/**
		 * Creates an array of indexes for all the characters that are escaped.
		 * @since 1.38
		 * @private
		 * @param {string} sMask Mask value
		 * @returns {Array} The array with the positions of the mask characters
		 */
		this._getSkipIndexes = function (sMask) {
			var iLength = (sMask) ? sMask.length : 0,
				i,
				aSkipIndexes = [],
				iPosCorrection = 0,
				bLastCharEscape = false; // Keeps if the last character iterated was an escape character

			for (i = 0; i < iLength; i++) {
				if (sMask[i] === ESCAPE_CHARACTER && !bLastCharEscape) {
					aSkipIndexes.push(i - iPosCorrection);
					// Escape the escape character
					bLastCharEscape = true;
					// Correction for multiple escape characters
					iPosCorrection++;
				} else {
					bLastCharEscape = false;
				}
			}
			return aSkipIndexes;
		};

		/**
		 * Applies the mask functionality to the input.
		 * @private
		 */
		this._applyMask = function () {
			var sMaskInputValue = this._getInputValue();

			if (!this.getEditable()) {
				return;
			}
			this._applyAndUpdate(sMaskInputValue);
		};

		/**
		 * Resets the temp value with a given range.
		 * @param {int} iFrom The starting position to start clearing (optional, zero based, default 0)
		 * @param {int} iTo The ending position to finish clearing (optional, zero based, defaults to last char array index)
		 * @private
		 */
		this._resetTempValue = function (iFrom, iTo) {
			var iIndex,
				sPlaceholderSymbol = this.getPlaceholderSymbol();

			if (typeof iFrom === "undefined" || iFrom === null) {
				iFrom = 0;
				iTo = this._oTempValue.getSize() - 1;
			}

			for (iIndex = iFrom; iIndex <= iTo; iIndex++) {
				if (this._oRules.hasRuleAt(iIndex)) {
					this._oTempValue.setCharAt(sPlaceholderSymbol, iIndex);
				}
			}
		};

		/**
		 * Applies rules and updates the DOM input value.
		 * @param {String} sMaskInputValue The input string to which the rules will be applied
		 * @private
		 */
		this._applyAndUpdate = function (sMaskInputValue) {
			this._applyRules(sMaskInputValue);
			this.updateDomValue(this._oTempValue.toString());
		};

		/**
		 * Finds the first placeholder symbol position.
		 * @returns {int} The first placeholder symbol position or -1 if none
		 * @private
		 */
		this._findFirstPlaceholderPosition = function () {
			return this._oTempValue.toString().indexOf(this.getPlaceholderSymbol());
		};

		/**
		 * Applies the rules to the given input string and updates char array with the result.
		 * @param {string} sInput The input string to which the rules will be applied
		 * @private
		 */
		this._applyRules = function (sInput) {
			var sCharacter,
				iInputIndex = 0,
				iMaskIndex,
				sPlaceholderSymbol = this.getPlaceholderSymbol(),
				bCharMatched;

			//when setValue & focusin on the same time:
			//IE: 1) setValue 2) focusin
			//Chrome: 1) focusin 2) setValue
			//Therefore sValue could contain the mask if there's no value set. This leads to replacing the first symbol
			//of the mask in the oTempValue with the " " symbol (coming from before the am/pm part )in IE and other
			//inconsistencies. There's no need of the logic in the for if both oTempValue & sInput are containing the mask symbols.
			if (this._oTempValue.toString() === sInput) {
				return;
			}
			for (iMaskIndex = 0; iMaskIndex < this._iMaskLength; iMaskIndex++) {
				if (this._oRules.hasRuleAt(iMaskIndex)) {
					this._oTempValue.setCharAt(sPlaceholderSymbol, iMaskIndex);
					bCharMatched = false;

					if (sInput.length) {
						do {
							sCharacter = sInput.charAt(iInputIndex);
							iInputIndex++;
							if (this._oRules.applyCharAt(sCharacter, iMaskIndex)) {
								this._oTempValue.setCharAt(sCharacter, iMaskIndex);
								bCharMatched = true;
							}
						} while (!bCharMatched && (iInputIndex < sInput.length));
					}

					// the input string is over ->reset the rest of the char array to the end
					if (!bCharMatched) {
						this._resetTempValue(iMaskIndex + 1, this._iMaskLength - 1);
						break;
					}
				} else {
					if (this._oTempValue.charAt(iMaskIndex) === sInput.charAt(iInputIndex)) {
						iInputIndex++;
					}
				}
			}
		};

		/**
		 * Handles <code>onKeyPress</code> event.
		 * @param {jQuery.Event} oEvent The jQuery event object
		 * @param {Object} oKey Summary object with information about the pressed keys. See #this._parseKeyBoardEvent
		 * @private
		 */
		this._keyPressHandler = function (oEvent, oKey) {
			var oSelection,
				iPosition,
				sCharReplacement;

			if (!this.getEditable()) {
				return;
			}
			oKey = oKey || this._parseKeyBoardEvent(oEvent);

			if (oKey.bCtrlKey || oKey.bAltKey || oKey.bMetaKey || oKey.bBeforeSpace) {
				return;
			}

			oSelection = this._getTextSelection();

			if (!oKey.bEnter && !oKey.bShiftLeftOrRightArrow && !oKey.bHome && !oKey.bEnd &&
				!(oKey.bShift && oKey.bDelete) &&
				!(oKey.bCtrlKey && oKey.bInsert) &&
				!(oKey.bShift && oKey.bInsert)) {
				if (oSelection.bHasSelection) {
					this._resetTempValue(oSelection.iFrom, oSelection.iTo - 1);
					this.updateDomValue(this._oTempValue.toString());
					this._setCursorPosition(Math.max(this._iUserInputStartPosition, oSelection.iFrom));
				}
				iPosition = this._oRules.nextTo(oSelection.iFrom - 1);

				if (iPosition < this._iMaskLength) {
					sCharReplacement = this._feedReplaceChar(oKey.sChar, iPosition, this._getInputValue());
					this._feedNextString(sCharReplacement, iPosition);
				}
				oEvent.preventDefault();
			}
		};

		/**
		 * Handle cut event.
		 *
		 * @param {jQuery.Event} oEvent The event object.
		 * @private
		 */
		this.oncut = function(oEvent) {
			var oSelection = this._getTextSelection(),
				iMinBrowserDelay = this._getMinBrowserDelay(),
				iBegin = oSelection.iFrom,
				iEnd = oSelection.iTo;

			InputBase.prototype.oncut(oEvent);

			if (!oSelection.bHasSelection || !this._isMaskEnabled()) {
				return;
			}

			iEnd = iEnd - 1;
			this._resetTempValue(iBegin, iEnd);

			//oncut happens before the input event fires (before oninput)
			//we want to use the values from this point of time
			//but set them after the input event is handled (after oninput)

			// give a chance the normal browser cut and oninput handler to finish its work with the current selection,
			// before messing up the dom value (updateDomValue) or the selection (by setting a new cursor position)
			setTimeout(function updateDomAndCursor(sValue, iPos, aOldTempValueContent) {
				//update the temp value back
				//because oninput breaks it
				this._oTempValue._aContent = aOldTempValueContent;
				this.updateDomValue(sValue);

				//we want that shortly after updateDomValue
				//but _positionCaret sets the cursor, also with a delayedCall
				//so we must put our update in the queue
				setTimeout(this._setCursorPosition.bind(this, iPos), iMinBrowserDelay);
			}.bind(
				this,
				this._oTempValue.toString(),
				Math.max(this._iUserInputStartPosition, iBegin),
				this._oTempValue._aContent.slice(0)
			), iMinBrowserDelay);
		};

		/**
		 * Handles <code>onKeyDown</code> event.
		 * @param {jQuery.Event} oEvent The jQuery event object
		 * @param {object} oKey The Key pressed
		 * @private
		 */
		this._keyDownHandler = function (oEvent, oKey) {
			var sDirection,
				oSelection,
				iCursorPos,
				iNextCursorPos,
				oKey = oKey || this._parseKeyBoardEvent(oEvent);

			if (!this.getEditable()) {
				return;
			}

			if (!oKey.bShift && (oKey.bArrowRight || oKey.bArrowLeft)) {
				iCursorPos = this._getCursorPosition();
				oSelection = this._getTextSelection();


				// Determine the correct direction based on RTL mode, input characters and selection state
				sDirection = this._determineArrowKeyDirection(oKey, oSelection);

				if (this._isRtlMode() && oSelection.bHasSelection) {
					iNextCursorPos = this._determineRtlCaretPositionFromSelection(sDirection);
				} else {
					// Determine the next position based on mask validation rules only
					iNextCursorPos = this._oRules[sDirection](iCursorPos);
				}

				// chrome needs special treatment, because of a browser bug with switched first and last position
				if (this._isWebkitProblematicCase()) {
					iNextCursorPos = this._fixWebkitBorderPositions(iNextCursorPos, sDirection);
				}

				this._setCursorPosition(iNextCursorPos);
				oEvent.preventDefault();

			} else if (oKey.bEscape) {
				this._applyAndUpdate(this._sOldInputValue);
				this._positionCaret(true);
				oEvent.preventDefault();

			} else if (oKey.bEnter) {
				this._inputCompletedHandler(oEvent);
			} else if ((oKey.bCtrlKey && oKey.bInsert) ||
				(oKey.bShift && oKey.bInsert)) {
				InputBase.prototype.onkeydown.apply(this, arguments);
			} else if ((!oKey.bShift && oKey.bDelete) || oKey.bBackspace) {
				this._revertKey(oKey);
				oEvent.preventDefault();
			} else if (this._isChromeOnAndroid()) {
				// needed for further processing at "oninput"
				this._oKeyDownStateAndroid = {
					sValue: this._oTempValue.toString(),
					iCursorPosition: this._getCursorPosition(),
					oSelection: this._getTextSelection()
				};
			}
		};

		/**
		 * Reverts the value, as if no key down.
		 * In case of backspace, just reverts to the previous temp value.
		 * @param {object} oKey All the info for a key in a keydown event
		 * @param {Object} [oSelection] An input selection info object, that could be used.
		 * If not specified, current selection will take place. Format is the same as _getTextSelection returned type.
		 * @private
		 */
		this._revertKey = function(oKey, oSelection) {
			oSelection = oSelection || this._getTextSelection();

			var iBegin = oSelection.iFrom,
				iEnd = oSelection.iTo;

			if (!oSelection.bHasSelection) {
				if (oKey.bBackspace) {
					iBegin = this._oRules.previousTo(iBegin);
				}
			}

			if (oKey.bBackspace || (oKey.bDelete && oSelection.bHasSelection)) {
				iEnd = iEnd - 1;
			}

			this._resetTempValue(iBegin, iEnd);
			this.updateDomValue(this._oTempValue.toString());
			this._setCursorPosition(Math.max(this._iUserInputStartPosition, iBegin));
		};

		/**
		 * @private
		 */
		this._feedNextString = function (sNextString, iPos) {
			var iNextPos,
				bAtLeastOneSuccessfulCharPlacement = false,
				aNextChars = sNextString.split(""),
				sNextChar;

			while (aNextChars.length) {
				sNextChar = aNextChars.splice(0, 1)[0]; //get and remove the first element
				if (this._oRules.applyCharAt(sNextChar, iPos)) {
					bAtLeastOneSuccessfulCharPlacement = true;

					this._oTempValue.setCharAt(sNextChar, iPos);
					iPos = this._oRules.nextTo(iPos);
				}
			}

			if (bAtLeastOneSuccessfulCharPlacement) {
				iNextPos = iPos; //because the cycle above already found the next pos
				this.updateDomValue(this._oTempValue.toString());
				this._setCursorPosition(iNextPos);
			}
		};

		/**
		 * Handles completed user input.
		 * @private
		 */
		this._inputCompletedHandler = function () {
			var sNewMaskInputValue = this._getInputValue(),
				bTempValueDiffersFromOriginal,
				sValue,
				bEmptyPreviousDomValue,
				bEmptyNewDomValue;

			if (this._oTempValue.differsFrom(sNewMaskInputValue)) {
				this._applyAndUpdate(sNewMaskInputValue);
			}

			bTempValueDiffersFromOriginal = this._oTempValue.differsFromOriginal();
			sValue = bTempValueDiffersFromOriginal ? this._oTempValue.toString() : "";
			//the getValue check is needed for a special case in IE when focus and setValue an empty string on a same time
			bEmptyPreviousDomValue = !this._sOldInputValue || !this.getValue();
			bEmptyNewDomValue = !sNewMaskInputValue;

			if (bEmptyPreviousDomValue && (bEmptyNewDomValue || !bTempValueDiffersFromOriginal)){
				this.updateDomValue("");
				return;
			}

			if (this._sOldInputValue !== this._oTempValue.toString()) {
				// Altered value (if any) should be used only for updating <value>. Mask works on dom level.
				InputBase.prototype.setValue.call(this, this._getAlteredUserInputValue ? this._getAlteredUserInputValue(sValue) : sValue);
				this._sOldInputValue = sValue;
				if (this.onChange && !this.onChange({value: sValue})) {//if the subclass didn't fire the "change" event by itself
					this.fireChangeEvent(sValue);
				}
			}
		};

		/**
		 * @param {Array} aMask The mask from which the mask value array will be built
		 * @param {String} sPlaceholderSymbol The symbol marker of the mask
		 * @param {Array} aRules The rules from which the mask value array is built
		 * @param {Array} aSkipIndexes @since 1.38 List of indexes to skip
		 * @private
		 */
		this._buildMaskValueArray = function (aMask, sPlaceholderSymbol, aRules, aSkipIndexes) {
			return aMask.map(function (sChar, iIndex) {
				var bNotSkip = aSkipIndexes.indexOf(iIndex) === -1,
					bRuleFound = this._findRuleBySymbol(sChar, aRules);
				return (bNotSkip && bRuleFound) ? sPlaceholderSymbol : sChar;
			}, this);
		};

		/**
		 * Builds the test rules according to the mask input rule's regex string.
		 * @param {Array} aMask The mask from which the test rules will be built
		 * @param {Array} aRules The rules which will be built
		 * @param {Array} aSkipIndexes @since 1.38 List of indexes to skip
		 * @returns {Array} The build test rules
		 * @private
		 */
		this._buildRules = function (aMask, aRules, aSkipIndexes) {
			var aTestRules = [],
				oSearchResult,
				iLength = aMask.length,
				i = 0;

			for (; i < iLength; i++) {
				if (aSkipIndexes.indexOf(i) === -1) {
					oSearchResult = this._findRuleBySymbol(aMask[i], aRules);
					aTestRules.push(oSearchResult ? new RegExp(oSearchResult.oRule.getRegex()) : null);
				} else {
					aTestRules.push(null);
				}
			}
			return aTestRules;
		};

		/**
		 * Parses the keyboard events.
		 * @param {object} oEvent The fired event
		 * @private
		 * @returns {object} Summary object with information about the pressed keys, for example: {{iCode: (*|oEvent.keyCode), sChar: (string|*), bCtrlKey: boolean, bAltKey: boolean, bMetaKey: boolean,
		 * bShift: boolean, bBackspace: boolean, bDelete: boolean, bEscape: boolean, bEnter: boolean, bIphoneEscape: boolean,
		 * bArrowRight: boolean, bArrowLeft: boolean, bHome: boolean, bEnd: boolean, bShiftLeftOrRightArrow: boolean,
		 * bBeforeSpace: boolean}}
		 */
		this._parseKeyBoardEvent = function (oEvent) {
			var iPressedKey = oEvent.which || oEvent.keyCode,
				mKC = KeyCodes,
				bArrowRight = iPressedKey === mKC.ARROW_RIGHT,
				bArrowLeft = iPressedKey === mKC.ARROW_LEFT,
				bShift = oEvent.shiftKey;

			return {
				iCode: iPressedKey,
				sChar: String.fromCharCode(iPressedKey),
				bCtrlKey: oEvent.ctrlKey,
				bAltKey: oEvent.altKey,
				bMetaKey: oEvent.metaKey,
				bShift: bShift,
				bInsert: iPressedKey === KeyCodes.INSERT,
				bBackspace: iPressedKey === mKC.BACKSPACE,
				bDelete: iPressedKey === mKC.DELETE,
				bEscape: iPressedKey === mKC.ESCAPE,
				bEnter: iPressedKey === mKC.ENTER,
				bIphoneEscape: (Device.system.phone && Device.os.ios && iPressedKey === 127),
				bArrowRight: bArrowRight,
				bArrowLeft: bArrowLeft,
				bHome: iPressedKey === KeyCodes.HOME,
				bEnd:  iPressedKey === KeyCodes.END,
				bShiftLeftOrRightArrow: bShift && (bArrowLeft || bArrowRight),
				bBeforeSpace: iPressedKey < mKC.SPACE
			};
		};

		/**
		 * Positions the caret or selects the whole input.
		 * @param {boolean} bSelectAllIfInputIsCompleted If true, selects the whole input if it is fully completed,
		 * or otherwise, always moves the caret to the first placeholder position
		 * @private
		 */
		this._positionCaret = function (bSelectAllIfInputIsCompleted) {
			var sMask = this.getMask(),
				iMinBrowserDelay = this._getMinBrowserDelay(),
				iEndSelectionIndex;

			clearTimeout(this._iCaretTimeoutId);
			iEndSelectionIndex = this._findFirstPlaceholderPosition();
			if (iEndSelectionIndex < 0) {
				iEndSelectionIndex = sMask.length;
			}

			this._iCaretTimeoutId = setTimeout(function () {
				if (this.getFocusDomRef() !== document.activeElement) {
					return;
				}
				if (bSelectAllIfInputIsCompleted && (iEndSelectionIndex === (sMask.length))) {
					this.selectText(0, iEndSelectionIndex);
				} else {
					this._setCursorPosition(iEndSelectionIndex);
				}
			}.bind(this), iMinBrowserDelay);
		};

		/**
		 * Determines the browser specific minimal delay time for setTimeout.
		 *
		 * Todo: This logic is a good candidate to be implemented generally in jQuery.sap.delayedCall method.
		 *
		 * @private
		 */
		this._getMinBrowserDelay = function () {
			return !Device.browser.msie ? 4 : 50;
		};

		/**
		 * Determines if a given string contains characters that will not comply to the mask input rules.
		 *
		 * @private
		 * @param {string} sInput the input
		 * @returns {boolean} True if the whole <code>sInput</code> passes the validation, false otherwise.
		 */
		this._isValidInput = function (sInput) {
			var iLimit = sInput.length,
				i = 0,
				sChar;

			for (; i < iLimit; i++) {
				sChar = sInput[i];

				/* consider the input invalid if any character except the placeholder symbol does not comply to the mask
				 rules of the corresponding position or if in case there is no rule, if the character is not exactly the same
				 as the current mask character at that position (i.e. immutable characters) */
				if (this._oRules.hasRuleAt(i) && (!this._oRules.applyCharAt(sChar, i) && sChar !== this.getPlaceholderSymbol())) {
					return false;
				}

				if (!this._oRules.hasRuleAt(i) && sChar !== this._oTempValue.charAt(i)) {
					return false;
				}
			}

			return true;
		};


		/**
		 * Checks if a given character belongs to an RTL language
		 * @private
		 * @param {String} sString The checked character
		 * @returns {boolean} Whether a given character belongs to an RTL language
		 */
		this._isRtlChar = function (sString) {
			var ltrChars    = 'A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02B8\u0300-\u0590\u0800-\u1FFF' + '\u2C00-\uFB1C\uFDFE-\uFE6F\uFEFD-\uFFFF',
				rtlChars    = '\u0591-\u07FF\uFB1D-\uFDFD\uFE70-\uFEFC',
				rtlDirCheck = new RegExp('^[^' + ltrChars + ']*[' + rtlChars + ']');

			return rtlDirCheck.test(sString);
		};


		/**
		 * Fix an issue with Chrome where first and last positions are switched
		 * @private
		 * @param {int} iCurrentPosition The current position
		 * @param {string} sDirection The direction used
		 * @returns {*} The current position
		 */
		this._fixWebkitBorderPositions = function (iCurrentPosition, sDirection) {
			var iTempLength = this._oTempValue.toString().length;

			if (sDirection === 'nextTo') {

				if (iCurrentPosition === 0 || iCurrentPosition === iTempLength || iCurrentPosition === 1) {
					iCurrentPosition = 0;
				} else if (iCurrentPosition === iTempLength + 1) {
					iCurrentPosition = 1;
				}

			} else {

				if (iCurrentPosition === 0 || iCurrentPosition === iTempLength - 1) {
					iCurrentPosition = iTempLength;
				} else if (iCurrentPosition === -1 || iCurrentPosition === iTempLength) {
					iCurrentPosition = iTempLength - 1;
				}

			}

			return iCurrentPosition;
		};


		/**
		 * Check if the current value contains any RTL characters
		 * @private
		 * @returns {boolean} Whether the current value contains any RTL characters
		 */
		this._containsRtlChars = function () {
			var sTempValue = this._oTempValue.toString(),
				bContainsRtl = false;
			for (var i = 0; i < sTempValue.length; i++) {
				bContainsRtl = this._isRtlChar(sTempValue[i]);
			}
			return bContainsRtl;
		};


		/**
		 * Check if the current control is in RTL mode.
		 * @private
		 * @returns {boolean} Whether the current control is in RTL mode
		 */
		this._isRtlMode = function () {
			return sap.ui.getCore().getConfiguration().getRTL() || (this.getTextDirection() === TextDirection.RTL);
		};

		/**
		 * Check if the current environment and interaction lead to a bug in Webkit
		 * @private
		 * @returns {boolean|*} Whether the current environment and interaction lead to a bug in Webkit
		 */
		this._isWebkitProblematicCase = function () {
			return Device.browser.webkit && this._isRtlMode() && !this._containsRtlChars();
		};

		/**
		 * Determine the correct direction based on RTL mode, current input characters and selection state
		 * @private
		 * @param {object} oKey The arrow key
		 * @param {object} oSelection The selection state
		 * @returns {string} sDirection
		 */
		this._determineArrowKeyDirection = function (oKey, oSelection) {
			var sDirection;
			if (!this._isRtlMode() || !this._containsRtlChars() || oSelection.bHasSelection) {
				// when there is selection we want the arrows to always behave as on a ltr input
				if (oKey.bArrowRight) {
					sDirection = 'nextTo';
				} else {
					sDirection = 'previousTo';
				}
			} else {
				// rtl mode
				if (oKey.bArrowRight) {
					sDirection = 'previousTo';
				} else {
					sDirection = 'nextTo';
				}
			}
			return sDirection;
		};

		/**
		 * Determine the right caret position based on the current selection state
		 * @private
		 * @param {string} sDirection
		 * @param {boolean} bWithChromeFix Whether there is Chrome fix
		 * @returns {int} iNewCaretPos
		 */
		this._determineRtlCaretPositionFromSelection = function (sDirection, bWithChromeFix) {
			var iNewCaretPos,
				oSelection = this._getTextSelection();

			if (bWithChromeFix) {
				if (sDirection === 'nextTo') {
					if (!this._containsRtlChars()) {
						iNewCaretPos = oSelection.iFrom;
					} else {
						iNewCaretPos = oSelection.iTo;
					}
				} else {
					if (!this._containsRtlChars()) {
						iNewCaretPos = oSelection.iTo;
					} else {
						iNewCaretPos = oSelection.iFrom;
					}
				}
			} else {
				if (sDirection === 'nextTo') {
					if (!this._containsRtlChars()) {
						iNewCaretPos = oSelection.iTo;
					} else {
						iNewCaretPos = oSelection.iFrom;
					}
				} else {
					if (!this._containsRtlChars()) {
						iNewCaretPos = oSelection.iFrom;
					} else {
						iNewCaretPos = oSelection.iTo;
					}
				}
			}

			return iNewCaretPos;
		};

		/**
		 * Handler for "input" event on Android devices.
		 * Needs a special handling for Chrome on Android, where keypress event is not firing.
		 *
		 * Example:
		 * Mask "SAP-<digit><digit>" ("SAP-__"),
		 * If the digit "9" is pressed, when the caret is at the beginning (0),
		 * the order of events and its handling is the following:
		 *
		 * Event		Desktop/iPhone 							Android:
		 * -----------------------------------------------------------------------------------------------
		 * keydown		9 arrives, nothing is 					keycode is not reliable - 229, null, undefined;
		 * 				happening								We can store the current dom value, because it is
		 * 														still "SAP-__" and postpone actual handling for oninput
		 *
		 * keypress		9 arrived;								<does not trigger>
		 * 				caret is moved to the
		 * 				first free
		 * 				for user input position(5);
		 * 				9 is being applied at the
		 * 				position 4,
		 * 				which ends with the final
		 * 				result "SAP-9_"
		 *
		 *
		 * oninput 		<does not trigger>					 	the dom is "SAP-9_",
		 * 														caret moved to index 5 (browser behavior).
		 * 														We should correct dom value and position
		 * 														the caret like oninput had never changed them (i.e.
		 * 														DOM -> "SAP-__", caret position ->0) and call
		 * 														keypress handler or revertKey (if delete or backspace
		 * 														was pressed).
		 *
		 * @private
		 */
		this._onInputForAndroidHandler =  function(oEvent) {
			var oKeyInfo;

			if (!this._oKeyDownStateAndroid) { // there was no previous event "keydown" (can be due to paste/cut event)
				return;
			}

			oKeyInfo = this._buildKeyboardEventInfo(this._oKeyDownStateAndroid.sValue, this._getInputValue(), this._oKeyDownStateAndroid.oSelection);

			/* Fix 2 side effects:
			 * - Cursor is at wrong position (browser behavior) - > restore it
			 * - dom value contains the newly entered string (browser behavior) - > restore it.
			 *
			 * The order is important, since  if we first fix the cursor position and then update the dom value,
			 * the cursor position would change once again, because update dom value moves it to the end of the string.
			 */
			// Should be called from within the input handler(not in a delayed call), otherwise a flickering between
			// the old and new value will be observed
			this.updateDomValue(this._oKeyDownStateAndroid.sValue);

			setTimeout(function(oInputEvent, oKeyDownState, oKey) {
				// delayed call is needed, as for some Android devices(e.g. S5) if _setCursorPosition (jQuery.cursorPos)
				// is called from within the input handler, this won't really change the cursor position,
				// even though _getCursorPosition() returns the one that had been previously set.
				this._setCursorPosition(oKeyDownState.iCursorPosition);
				if (oKey.bBackspace) { // backspace could also mean previous selection which is deleted by any char
					this._revertKey(oKey, oKeyDownState.oSelection);
					if (oKeyDownState.oSelection.bHasSelection && oKey.sChar) { // user-typed char replaces previous selection
						this._keyPressHandler(oInputEvent, oKey);
					}
				} else {
					this._keyPressHandler(oInputEvent, oKey);
				}
			}.bind(this, oEvent, this._oKeyDownStateAndroid, oKeyInfo), 0);

			delete this._oKeyDownStateAndroid;
			oEvent.preventDefault();
		};

		/**
		 * Compares two strings to build an info object (the same like if #parseKeyboardEvent is called), that is suitable
		 * for passing it to <code>keypress</code> event handler.
		 * For example:
		 *  <ul>
		 *  	<li> "SAP-__", "SAP-9_" -> the "pressed" key is "9".</li>
		 *  	<li> "SAP-10", "SAP-1_" -> the "pressed" key is "backspace".</li>
		 *	</ul>
		 * @param {string} sOldValue the old value
		 * @param {string} sNewValue the new value
		 * @param {Object} oOldValueSelection An input selection info object, that could be used. Format is the same as
		 * _getTextSelection return type.
		 * @returns {Object} an info object about which key "is pressed" (see #parseKeyboardEvent)
		 * @private
		 */
		this._buildKeyboardEventInfo = function(sOldValue, sNewValue, oOldValueSelection) {
			var sNewChar = "", i,
				oResult = {},
				bCurrentPosHadSelection;

			if (!sOldValue && !sNewValue) {
				return {};
			}

			if (sOldValue && sNewValue && sNewValue.length < sOldValue.length) { //backspace
				// We choose "bBackspace" property instead of "bDelete", because only "Backspace"
				// is available on Android keyboards (i.e. no "delete")
				oResult.bBackspace = true; // the bBackspace does not denote if there was previous selection or not
			}

			for (i = 0; i < sNewValue.length; i++) {
				//if char from sOldValue was selected before, the same positioned char in sNewValue should be always considered
				// as a new char (even if both chars are equal)
				bCurrentPosHadSelection = oOldValueSelection.bHasSelection && oOldValueSelection.iFrom === i;

				if (bCurrentPosHadSelection || sOldValue[i] !== sNewValue[i]) {
					sNewChar = sNewValue[i];
					break;
				}
			}
			oResult.sChar = sNewChar;

			return oResult;
		};


		/**
		 * Checks if the current environment is Android PS with browser Chrome
 		 * @returns {boolean} true if it is both Chrome and Android, otherwise - false.
		 * @private
		 */
		this._isChromeOnAndroid = function() {
			return Device.browser.chrome && Device.os.android;
		};

	};

	return MaskEnabler;
}, /* bExport= */ true);